You know, on the mountains, the weather changes and... usually not to better:) These aren't big mountains, but just have some clothes and rain coat with you if you plan to go far away from "civilization", just in case...
If driving be very careful. The weather along this region changes from one corner to the other. One second you'll see blue skies, the next the fog won't let you see at all.
Drive slow where indicated and be careful not to hurt the animals. I saw a lot of squashed little animals along the road.